Features • Universal Thread Compatibility: Features a 5/8"-11 universal thread for quick and easy attachment to standard coring or handheld drills • Durable Alloy Steel Construction: Crafted from high-quality alloy steel, this diamond core bit ensures long-lasting wear resistance and enhanced performance • Efficient Drilling Design: Equipped with chip evacuation holes and a concentric shaft, this core drill bit offers superior efficiency for precise, clean cuts • Versatile Dry and Wet Use: Perfect for both dry and wet drilling applications, allowing you to tackle various projects from vertical positions with ease • Ideal for Multiple Materials: Perfectly suited for drilling through concrete, brick, and marble, making it an essential tool for installing HVAC systems and plumbing fixtures Features: 1、UNIVERSAL THREAD: This coring drill bit has 5/8？11 universal thread, can be easily and quickly assembled to a standard fixed coring or handheld drill pr. 2、EXCELLENT MATERIAL: The core drill is made of excellent alloy steel, wear resistant and , the diamond abrasive grains can ensure a longer core life. 3、HIGH PERFORMANCE: This diamond coring drill bit features chip evacuation holes, highly regular serrations and concentric shaft design for efficient . 4、EASY : This hole opener bit can be used for both dry and wet drilling, drilling from a vertical position and going deep to meet a variety of needs. 5、WIDE APPLICATION: Ideal for drilling holes in concrete, brick and marble, often used to install air conditioners, plumbing, balustrades and buildings, etc. Specification: Item Type: Core Drill Bit Material: Alloy Steel, Diamond Thread: 5/8-11 Drill Diameter: Approx. 108mm / 4.25in Length: Approx. 240mm / 9.5in Package List: 1 x Diamond Bit 1 x Positioning Bit 1 x Hex Wrench 1 x Saw Blade 1 x Gasket Package List 1 x Diamond Bit 1 x Positioning Bit 1 x Hex Wrench 1 x Saw Blade 1 x Gasket